<html>
<head><meta charset="utf-8"><title>Current state of PGO (crash) · t-compiler/help · Zulip Chat Archive</title></head>
<h2>Stream: <a href="https://rust-lang.github.io/zulip_archive/stream/182449-t-compiler/help/index.html">t-compiler/help</a></h2>
<h3>Topic: <a href="https://rust-lang.github.io/zulip_archive/stream/182449-t-compiler/help/topic/Current.20state.20of.20PGO.20(crash).html">Current state of PGO (crash)</a></h3>

<hr>

<base href="https://rust-lang.zulipchat.com">

<head><link href="https://rust-lang.github.io/zulip_archive/style.css" rel="stylesheet"></head>

<a name="224961505"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/182449-t-compiler/help/topic/Current%20state%20of%20PGO%20%28crash%29/near/224961505" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Ryan Greenblatt <a href="https://rust-lang.github.io/zulip_archive/stream/182449-t-compiler/help/topic/Current.20state.20of.20PGO.20(crash).html#224961505">(Feb 03 2021 at 01:15)</a>:</h4>
<p>I am getting crashes right now (segfault!) when trying to use PGO on both nightly and stable. Is this likely a known bug? I can  try to make a minimal repro, but I would like to know if this is well known (can't seem to find an issue). Also, sorry if this is the wrong place for this question.</p>



<a name="224963067"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/182449-t-compiler/help/topic/Current%20state%20of%20PGO%20%28crash%29/near/224963067" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Ryan Greenblatt <a href="https://rust-lang.github.io/zulip_archive/stream/182449-t-compiler/help/topic/Current.20state.20of.20PGO.20(crash).html#224963067">(Feb 03 2021 at 01:35)</a>:</h4>
<p>Hmm, looks like it might be PGO + LTO which does it</p>



<hr><p>Last updated: Aug 07 2021 at 22:04 UTC</p>
</html>